Re: Variac current and VA rating

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Mddeming-at-aol-dot-com>

In a message dated 6/1/01 5:54:35 PM Eastern Daylight Time, tesla-at-pupman-dot-com 
writes: 


>
> I think theoretically that should be fine - its the KVA not the A that 
> matters (i think! correct me if Im wrong). The point is that at 1/2 the 
> voltage double the current would be hard because at half the voltage only 
> half the current will be drawn by the same transformer (assuming the same 
> resistance) - but i see your point - try it to find out!!! Just to let you 
> know, Mike Tucknott was running a 16A variac at 40A for his big coil, and 
> this is fine so long as you keep the runs under 2 mins and leave plenty of 
> time for it to cool (or stick it in oil) so try it and if it gets too hot, 
> stop! 
>
> Jason 


Hi Jason, All! 
Isn't putting a Variac in oil kind of like oiling your brake drums? Just a 
thought. 
Matt D.